The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2014
Filed:
Oct. 11, 2005
Jacek F. Gieras, Glastonbury, CT (US);
Sastry V. Vedula, Glastonbury, CT (US);
Pei-yuan Peng, Manchester, CT (US);
Bryan Robert Siewert, Westbrook, CT (US);
Jacek F. Gieras, Glastonbury, CT (US);
Sastry V. Vedula, Glastonbury, CT (US);
Pei-Yuan Peng, Manchester, CT (US);
Bryan Robert Siewert, Westbrook, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
An elevator door assembly () includes an electromagnet () use as part of a door coupler for coupling elevator car doors () to elevator hoistway doors (). A disclosed example includes an electromagnet core () with a gap () in one of four sides of the core. The gap () directs and concentrates magnetic flux of the electromagnet () to concentrate an attractive force for coupling the electromagnet () with a vane (). Disclosed examples includes unique geometric and dimensional relationships to achieve a desired goodness factor.